Oki B431L6

6. Procedures for Repairing
Oki Data CONFIDENTIAL
44983601TH Rev.1
6-23 /
Vertical white belt/ White line
• IstheLEDlensdirty?
• Yes CleantheLEDlens.
• No DoesthecontactplateofthetransferrollercontacttheTRterminalofthehigh-voltagepower
supplyunitproperly?(SeeFigure6-4.,Section7.2(2))
•No AdjustthecontactplatesothatitcontactstheTRterminalofthehigh-voltagepower
supply unit properly.
• Yes Replacethetransferroller.
• Hasthetroublebeensolved?
• Yes Completed.
• No Isthebackuprollersurfacenormal?
• No ReplacethefuserAssy.
• Yes IstheLEDheadappropriatelyinstalled?(ChecktheHEADconnectorofthemainboardand
the PC connector of the LED head.)
• No InstalltheLEDheadappropriately.
• Yes ReplacetheLEDhead.
• Hasthetroublebeensolved?
• Yes Completed.
• Yes Replacetheimagedrumcartridge.
• Hasthetroublebeensolved?
• No Replacethemainboardorhigh-voltagepowersupplyunit.